API Auth Header Generator
Generate API authentication headers for Bearer, Basic, and AWS Signature schemes.
Fill in the fields above to generate the Authorization header.
Bearer, Basic, and AWS Signature authentication each expect a completely different header format, Bearer just needs a token appended after a keyword, Basic needs a username and password base64-encoded together, and AWS Signature Version 4 needs a canonical request hashed and signed against a secret key, a process involved enough that getting it wrong by hand is genuinely easy. This tool builds the correct header for whichever scheme an API actually requires, handling the base64 encoding or the AWS signing calculation directly rather than leaving that math to be done manually.
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Useful for generating a Basic auth header's base64-encoded credentials without a separate tool, formatting a Bearer token header correctly on the first try, or producing an AWS Signature V4 header without implementing the multi-step signing process from scratch.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline